Hosfelt has a red blinking LED for $.55 each: http://www.hosfelt.com/en-us/dept_214.html
but I doubt the interval is one minute. They also have a Dual Color Bright Green/Blinking Red LED depending upon the polarity, for $1.49 Vince
Hosfelt has a red blinking LED for $.55 each: http://www.hosfelt.com/en-us/dept_214.html
but I doubt the interval is one minute. They also have a Dual Color Bright Green/Blinking Red LED depending upon the polarity, for $1.49 Vince